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https://www.readbyqxmd.com/read/28651420/-effects-of-hypoxia-inducible-factor-1%C3%AE-on-p311-and-its-influence-on-the-migration-of-murine-epidermal-stem-cells
#1
Z D Xu, H S Li, S Wang, W F He, J Wu, G X Luo
Objective: To explore the effects of hypoxia inducible factor-1α (HIF-1α) on P311 and its influence on the migration of murine epidermal stem cells (ESCs) under hypoxia in vitro. Methods: Two kinds of murine ESCs were isolated and obtained from 15 neonatal wild-type C57BL/6J mice and 5 congeneric source P311 gene knock-out mice, respectively. The first passage of cells were used in the following experiments after morphologic observation and detection of expression of cell surface markers CD71 and CD49f with flow cytometer...
May 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28651407/-homology-analysis-and-historical-tracing-for-inter-continental-burkholderia-pseudomallei-strains-of-sequence-type-562
#2
X Zheng, L X Wang, H Wu, H Chen, X Zhu, J R He, L X Xia, W Li
Objective: To understand the homology of sequence type 562 (ST562) strains of Burkholderia pseudomallei which circulated in two separate continents (Asia and Australia) at different times. Methods:SpeⅠrestriction fragments and 4-locus multiple locus variable number tandem repeat analysis (MLVA-4) profiles were extracted from MSHR5858 (ST562 Australia strain) and 350105 (ST562 historical strain of Hainan) genomes respectively by in silico analysis and then compared with the PFGE and MLVA-4 results of five ST562 clinical isolates from Hainan to test their homology...
May 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28651128/local-up-regulation-of-interferon-%C3%AE-ifn-%C3%AE-following-disc-herniation-is-involved-in-the-inflammatory-response-underlying-acute-lumbar-radicular-pain
#3
Gunn-Helen Moen, Aurora Moen, Elina I Schistad, Johannes Gjerstad
Lumbar radicular pain after disc herniation may be associated with release of pro-inflammatory cytokines from nucleus pulposus (NP) tissue. In the present study we examined the role of interferon-γ (IFN-γ) and cluster of differentiation 68 (CD68) in the acute phase of this process. First, in an animal model mimicking the clinical situation after disc herniation, the role of IFN-γ close to the dorsal nerve roots was studied. Next, in patients with lumbar radicular pain due to disc herniation, we examined how two single nucleotide polymorphisms (SNPs; rs2069705 and rs2069718) are important for the IFN-γ expression influenced the pain behavior...
June 23, 2017: Cytokine
https://www.readbyqxmd.com/read/28651119/experimental-ultrasonic-characterization-of-polyester-based-materials-for-cultural-heritage-applications
#4
Andres Arciniegas, Loic Martinez, Arnaud Briand, Sophie Prieto, Stéphane Serfaty, Nicolas Wilkie-Chancellier
For several years, the Réunion des musées nationaux - Grand-Palais has produced polyester resin reproductions in order to replace marble sculptures that have weakened by outdoor exposure. These objects are made of a complex multilayered polyester composite material including reinforcements to ensure the mechanical strength of the final structure and mineral fillers that allow to imitate the original aesthetics. However, the final structure also weakens because of constant outdoor exposure and ageing. This observation leads today to conduct research related to the structural health monitoring of reproductions for preventive conservation of cultural heritage...
June 17, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28650951/development-and-progression-of-a-lamellar-macular-hole-with-lamellar-hole-associated-epiretinal-proliferation
#5
Denise Compera, Matteo G Cereda, Ricarda G Schumann, Ferdinando Bottoni
PURPOSE: To describe evolution and progression of a lamellar macular hole (LMH) with "lamellar hole-associated epiretinal proliferation (LHEP)" using spectral-domain optical coherence tomography and fundus autofluorescence. METHODS: Observational case report. RESULTS: We report on a 63-year-old male patient demonstrating a complete history of LMH development with LHEP occurring during a follow-up period of 8 years. Presenting with a normal foveal contour and attached posterior vitreous at first visit, an LMH developed shortly after incomplete posterior vitreous detachment with vitreopapillary adhesion...
June 23, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28650809/beam-diffraction-effects-in-the-backward-wave-regions-of-viscoelastic-leaky-lamb-modes-for-plate-transmission-at-normal-incidence
#6
Magne Aanes, Kjetil D Lohne, Per Lunde, Magne Vestrheim
Plane-wave theory for fluid-embedded isotropic plates is often used in ultrasonic guided-wave applications, and to estimate wall thickness, corrosion, or sound velocities in plates and pipes. In such structures, measured ultrasonic transmission through the solid material is affected by acoustic beam diffraction effects, and the results may deviate from plane-wave descriptions, which are insufficient to describe the complex effects that occur. When exciting a fluid-embedded steel plate with a pulsed ultrasonic beam at normal incidence, resonance frequency downshift, axial sound pressure level (SPL) increase, and beam narrowing have been observed, for measured resonance peaks in the frequency regions of certain leaky Lamb mode branches of the plate...
June 26, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28650693/healthy-bovines-as-reservoirs-of-major-pathogenic-lineages-of-staphylococcus-aureus-in-portugal
#7
Teresa Conceição, Hermínia de Lencastre, Marta Aires-de-Sousa
The nosocomial prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in Portugal is close to 50% and remains one of the highest in Europe. MRSA reservoirs in the animal setting in Portugal have been very poorly investigated, namely among animal husbandry. A total of 52 samples (nasal, inguinal region, and milk) were obtained from bovine animals and analyzed for the presence of S. aureus. The isolates were characterized by pulsed-field gel electrophoresis (PFGE), spa typing, SCCmec typing, and multilocus sequence typing and tested for antimicrobial susceptibility, presence of mecA and mecC genes, and virulence determinants...
June 26, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28650358/the-volume-outcome-relationship-in-deceased-donor-kidney-transplantation-and-implications-for-regionalization
#8
Andrew S Barbas, Martin J Dib, Aparna S Rege, Deepak S Vikraman, Debra L Sudan, Stuart J Knechtle, John E Scarborough
OBJECTIVE: The aim of this study was to investigate the volume-outcome relationship in kidney transplantation by examining graft and patient outcomes using standardized risk adjustment (observed-to-expected outcomes). A secondary objective was to examine the geographic proximity of low, medium, and high-volume kidney transplant centers in the United States. SUMMARY OF BACKGROUND DATA: The significant survival benefit of kidney transplantation in the context of a severe shortage of donor organs mandates strategies to optimize outcomes...
July 22, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28650167/molecular-insight-into-the-adsorption-of-spruce-budworm-antifreeze-protein-to-ice-surface-a-clathrate-mediated-recognition-mechanism
#9
Sandipan Chakraborty, Biman Jana
The principal mechanism of ice recognition by antifreeze protein (AFP) is a topic of intense discussion in recent times. Despite of many experimental and theoretical studies, the detailed understanding of the process remains elusive. Present work aims to explore the molecular mechanism of ice recognition by an insect AFP from Spruce budworm, sbwAFP. Evident from our simulation, water dynamics becomes highly sluggish around the IBS due to the combined effect of confinement and ordering induced by the perfectly aligned methyl side-chains of threonine residues, the THRs ladder...
June 26, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28650056/tailoring-the-local-environment-around-metal-ions-a-solution-chemical-and-structural-study-of-some-multidentate-tripodal-ligands
#10
Ferenc Matyuska, Attila Szorcsik, Nóra V May, Ágnes Dancs, Éva Kováts, Attila Bényei, Tamás Gajda
Manganese(ii), copper(ii) and zinc(ii) complexes of four polydentate tripodal ligands (tachpyr (N,N',N''-tris(2-pyridylmethyl)-cis,cis-1,3,5-triaminocyclohexane), trenpyr (tris[2-(2-pyridylmethyl)aminoethyl]amine, tach3pyr (N,N',N''-tris(3-pyridylmethyl)-cis,cis-1,3,5-triaminocyclohexane) and tren3pyr (tris[2-(2-pyridylmethyl)aminoethyl]amine)) were characterized in both solution and solid states. A combined evaluation of potentiometric, UV-VIS, NMR and EPR data allowed the conclusion of both thermodynamic and structural information about the complexes formed in solution...
June 26, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28649632/three-dimensional-organotypic-co-culture-model-of-intestinal-epithelial-cells-and-macrophages-to-study-salmonella-enterica-colonization-patterns
#11
Jennifer Barrila, Jiseon Yang, Aurélie Crabbé, Shameema F Sarker, Yulong Liu, C Mark Ott, Mayra A Nelman-Gonzalez, Simon J Clemett, Seth D Nydam, Rebecca J Forsyth, Richard R Davis, Brian E Crucian, Heather Quiriarte, Kenneth L Roland, Karen Brenneman, Clarence Sams, Christine Loscher, Cheryl A Nickerson
Three-dimensional models of human intestinal epithelium mimic the differentiated form and function of parental tissues often not exhibited by two-dimensional monolayers and respond to Salmonella in key ways that reflect in vivo infections. To further enhance the physiological relevance of three-dimensional models to more closely approximate in vivo intestinal microenvironments encountered by Salmonella, we developed and validated a novel three-dimensional co-culture infection model of colonic epithelial cells and macrophages using the NASA Rotating Wall Vessel bioreactor...
2017: NPJ Microgravity
https://www.readbyqxmd.com/read/28649345/body-shape-differences-in-a-pair-of-closely-related-malawi-cichlids-and-their-hybrids-effects-of-genetic-variation-phenotypic-plasticity-and-transgressive-segregation
#12
Martin Husemann, Michael Tobler, Cagney McCauley, Baoqing Ding, Patrick D Danley
Phenotypic differences may have genetic and plastic components. Here, we investigated the contributions of both for differences in body shape in two species of Lake Malawi cichlids using wild-caught specimens and a common garden experiment. We further hybridized the two species to investigate the mode of gene action influencing body shape differences and to examine the potential for transgressive segregation. We found that body shape differences between the two species observed in the field are maintained after more than 10 generations in a standardized environment...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649343/locally-adapted-populations-of-a-copepod-can-evolve-different-gene-expression-patterns-under-the-same-environmental-pressures
#13
Thiago G Lima, Christopher S Willett
As populations diverge in allopatry, but under similar thermal conditions, do similar thermal performance phenotypes evolve by maintaining similar gene expression patterns, or does genetic divergence lead to divergent patterns of gene expression between these populations? We used genetically divergent populations of the copepod Tigriopus californicus, whose performance at different thermal conditions is well characterized, to investigate transcriptome-wide expression responses under two different thermal regimes: (1) a nonvariable temperature regime and (2) a regime with variable temperature...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649214/interactions-between-obsessional-symptoms-and-interpersonal-ambivalences-in-psychodynamic-therapy-an-empirical-case-study
#14
Shana Cornelis, Mattias Desmet, Kimberly L H D Van Nieuwenhove, Reitske Meganck, Jochem Willemsen, Ruth Inslegers, Jasper Feyaerts
The classical symptom specificity hypothesis (Blatt, 1974) particularly associates obsessional symptoms to interpersonal behavior directed at autonomy and separation from others. Cross-sectional group research, however, has yielded inconsistent findings on this predicted association, and a previous empirical case study (Cornelis et al., in press; see Chapter 2) documented obsessional pathology to be rooted in profound ambivalences between autonomous and dependent interpersonal dynamics. Therefore, in the present empirical case study, concrete operationalizations of the classical symptom specificity hypothesis are contrasted to alternative hypotheses based on the observed complexities in Chapter 2...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28648948/randomized-phase-ii-study-comparing-prophylactic-cranial-irradiation-alone-to-prophylactic-cranial-irradiation-and-consolidative-extra-cranial-irradiation-for-extensive-disease-small-cell-lung-cancer-ed-sclc-nrg-oncology-rtog-0937
#15
Elizabeth M Gore, Chen Hu, Alexander Y Sun, Daniel F Grimm, Suresh S Ramalingam, Neal E Dunlap, Kristin A Higgins, Maria Werner-Wasik, Aaron M Allen, Puneeth Iyengar, Gregory M M Videtic, Russell K Hales, Ronald C McGarry, James J Urbanic, Anthony T Pu, Candice A Johnstone, Volker W Stieber, Rebecca Paulus, Jeffrey D Bradley
INTRODUCTION: RTOG-0937 is a randomized phase-II trial evaluating 1-year OS with PCI or PCI plus consolidative radiation therapy (cRT) to intra-thoracic disease and extracranial metastases for ED-SCLC. METHODS: Patients with 1-4 extracranial metastases were eligible after CR or PR to chemotherapy. Randomization was to PCI or PCI+cRT to the thorax and metastases. Original stratification included PR vs CR after chemotherapy and 1 vs 2-4 metastases; age < 65 vs > 65 was added after an observed imbalance...
June 22, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28648678/single-plane-illumination-microscopy-as-a-tool-for-studying-nucleome-dynamics
#16
Jörg Langowski
Single plane illumination microscopy (SPIM) is a new optical method that has become extremely important in recent years. It is based on the formation of a "light slice" in the specimen in which fluorescently tagged molecules are observed. The spatial resolution is close to that of confocal optics, but without the disadvantages inherent to scanning or high laser irradiation doses. A recent development is light sheet fluctuation microscopy, which exploits the dynamic information contained in the fluorescence intensity fluctuations of each image pixel...
June 22, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28648252/active-fault-tolerant-control-based-on-interval-type-2-fuzzy-sliding-mode-controller-and-non-linear-adaptive-observer-for-3-dof-laboratory-helicopter
#17
Samir Zeghlache, Tarak Benslimane, Abderrahmen Bouguerra
In this paper, a robust controller for a three degree of freedom (3 DOF) helicopter control is proposed in presence of actuator and sensor faults. For this purpose, Interval type-2 fuzzy logic control approach (IT2FLC) and sliding mode control (SMC) technique are used to design a controller, named active fault tolerant interval type-2 Fuzzy Sliding mode controller (AFTIT2FSMC) based on non-linear adaptive observer to estimate and detect the system faults for each subsystem of the 3-DOF helicopter. The proposed control scheme allows avoiding difficult modeling, attenuating the chattering effect of the SMC, reducing the rules number of the fuzzy controller...
June 22, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28648042/-effects-of-lappaconitine-on-pain-and-inflammatory-response-of-severely-burned-rats-and-the-mechanism
#18
C L Yang, Z R Wei, T H Zhang, X Q Zeng, B H Wu
Objective: To explore the effects of lappaconitine (LA) on pain and inflammatory response of severely burned rats and the mechanism. Methods: Forty SD rats were divided into healthy+ normal saline group, sham injury+ normal saline group, pure burn group, burn+ LA group, and healthy+ LA group according to the random number table (the same dividing method below), with 8 rats in each group. Rats in pure burn and burn+ LA groups were inflicted with about 32% total body surface area deep partial-thickness scald (hereinafter referred to as burn) on the back and right hind...
June 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28648011/-relationship-between-carotid-plaque-and-diabetic-retinopathy-in-type-2-diabetes-mellitus-patients
#19
Y Y Xiao, M K Yuan, P Xi, B Gao
Objective: To analyze the relevant factors for diabetic retinopathy. Methods: The data of type 2 diabetes mellitus patients undergoing general examination and ophthalmology specialist consultation were collected from the inpatients of Department of Endocrinology in Beijing Airport Hospital between 2013 and 2016, and the relevant factors of diabetic retinopathy were retrospectively analyzed. Results: A total of 432 cases were analyzed, including 168 cases of non-diabetic retinopathy and 264 cases of diabetic retinopathy...
June 27, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28647872/identification-and-characterization-of-intramolecular-%C3%AE-halo-interaction-in-d-0-complexes-a-theoretical-approach
#20
Tanay Debnath, Tamalika Ash, Subhendu Sarkar, Abhijit K Das
A mechanistic investigation to detect intramolecular M⋯X-C type interactions in d(0) neutral and cationic complexes was carried out through a benchmark study employing different density functional methods. As γ-halogen is involved in M⋯X-C type interactions, it is denoted as a γ-halo interaction and the respective conformers are designated as halo-conformers. By analyzing the geometrical parameters of halo-conformers, it was observed that, irrespective of the nature of the metal and the halogen, the Cγ-X bond distance increases compared to the usual C-X bond, which brings the M and X centers close enough to generate a weak interaction...
July 2017: Journal of Molecular Modeling
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